l-arginine l-lysine l-carnitine l-carnitine The 5 Best Supplements L-Carnitine
Description
the most abundant carnitine ester) are around 3 to 6 mol/L (8)

There is no evidence for changes in muscle carnitine concentrations following short periods (4 weeks or less) of supplementation, nor in most longer term studies which do not co-ingest carbohydrate with the carnitine

Risk of bias assessment Two reviewers independently appraised the quality of the studies using the Cochrane risk of bias version 2 (RoB-2) tool [30] and disagreements were resolved through consensus

Do not use this product if you are at risk or are being treated for any medical condition of if you are taking MAO inhibitor